Vim lawv valence shells valence shells Lub plhaub valence yog cov txheej ntawm orbitals uas muaj zog nkag tau rau kev txais cov electrons los tsim cov tshuaj lom neeg. Rau cov ntsiab lus tseem ceeb, lub plhaub valence muaj cov ns thiab np orbitals hauv lub plhaub sab nraud. https://en.wikipedia.org › wiki › Valence_electron
Valence electron - Wikipedia
muaj peev xwm ntawm kev txais electrons, yog li lawv feem ntau yog electronegative hauv xwm. Piv txwv li → Cl muaj 7 electrons nyob rau hauv nws lub plhaub feem ntau thiab yog li nws muaj peev xwm nce 1 electron kom ruaj khov, yog li nws yog ib qho electronegative tsis-hlau.
Puas yog cov hlau tsis yog electronegative tshaj plaws?
Nonmetals muaj ntau dua electronegativities dua hlau; Ntawm cov nonmetals, fluorine yog cov electronegative tshaj plaws, ua raws li oxygen, nitrogen, thiab chlorine. Qhov loj dua qhov sib txawv ntawm electronegativity ntawm ob lub atoms, qhov ntau dua polar cov nyiaj ntawm lawv.
Dab tsi yog lub cim electronegative ntawm cov hlau tsis yog?
Cov ntsiab lus uas zoo li tau txais hluav taws xob los tsim cov anions thaum muaj tshuaj lom neeg hu ua non-metals. Cov no yog cov ntsiab lus electronegative nrog siab ionization zog. Lawv yog tsis-lustrous, nkig thiab pluag conductors ntawm tshav kub thiab hluav taws xob(tshwj tsis yog graphite).
Vim li cas cov khoom uas muaj electronegativity siab feem ntau tsis yog xim hlau hauv qhov xwm txheej?
Cov ntsiab lus nrog lub siab electronegativity (χ ≥ 2.2 ntiDaim duab 2.12. 2) muaj tsis zoo affinities thiab loj ionization muaj peev xwm, yog li lawv feem ntau yog nonmetals thiab hluav taws xob insulators uas zoo li nce electrons hauv tshuaj lom neeg (piv txwv li, lawv yog oxidants).
Yuav ua li cas yog lub hlau tsawg tshaj plaws?
Qhov tsawg kawg yog xim hlau lossis feem ntau tsis yog xim hlau yog fluorine. Halogens nyob ze rau saum lub rooj lub sij hawm yog cov khoom siv hlau tsawg tshaj plaws, tsis yog cov pa roj zoo.
